Grinding method and device

Abstract

The present invention relates to processes for disintegrating brittle materials using mechanical devices. The present invention can be used in all fields of industry where it is necessary to produce powders having a particle size ranging from several millimeters to nano-sizes. FIG. 1 illustrates the essence of the proposed grinding method. Grinding bodies ( 1 ) are situated in a single layer between two support surfaces ( 2 ). The gap between the grinding bodies ( 1 ) and the support surfaces is established and regulated to be less than 0.86 of the diameter of the grinding body ( 1 ), thus automatically maintaining the grinding bodies ( 1 ) in a single layer. Particles of starting material ( 3 ) are fed onto one of the support surfaces ( 2 ) which is displaced relative to the grinding body ( 1 ) and to which rotational motion is imparted by means of friction with said support surface ( 2 ). The particles of the starting material ( 3 ), because their size is 15-20 times smaller than the diameter of the grinding body, (the capture angle of the particles of starting material ( 3 ) by the grinding body ( 1 ) is smaller than the angle of friction of the material of the particles of starting material ( 3 ) against the material of the grinding bodies ( 1 )), are pulled under the the grinding body ( 1 ) and, because the vertical displacement of the grinding body ( 1 ) is limited by the second support surface ( 2 ), the particles of starting material ( 3 ) are thus crushed by the grinding bodies ( 1 ).

1 . (canceled) 
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . A method of grinding material comprising;
 disintegrating dry and wet grinding material located on grinding surface of rotating bodies having the form of bodies of revolution; and   increasing the grinding efficiency and the efficiency of the process, wherein the grinding media is placed in an orderly and randomly in one layer between the two support surfaces; wherein the gap between the surface of the grinding bodies and the supporting surface is less than 0.86 sets diameter grinding bodies and the supporting surface, which is shaped into a cylinder, a cone or a circle set in parallel or at an angle to each other, the value of which is set smaller than the angle of friction of grinding bodies and supporting surfaces of the material to be ground; while supporting surfaces arranged coaxially relative to each other or to the eccentricity and oriented horizontally, vertically or obliquely.   
     
     
         5 . A device for grinding material comprising;
 a fixed housing having a closed shape contacting with grinding bodies in the form of bodies of revolution and rotation drive, wherein in order to increase the efficiency and degree of milling body comprises fixedly interconnecting tconical portion and cylindrical step portion and horizontal portion to form a circle, provided with concentric guide grooves; and in the interior of the housing coaxially or eccentrically thereto is placed a rotor consisting of fixedly interconnected by a conical portion and a cylindrical stepped portion having a circular shape, the horizontal portion; the rotor is fixed through a sliding key and the adjusting nut to the driven pulley, through which the rotation support is fixed to a base; and the gaps between the casing and the rotor has grinding bodies having the shape: conical, barrel-shaped or cylindrical rollers or balls of various sizes with surface scored or without it; wherein the inner bottom of the sample top of the rotor, the bore until the loading level of grinding media in its walls drilled starting power supply path, and a driven pulley connected through a belt drive with fixed based actuator.   
     
     
         6 . The device as set forth in  claim 5  wherein the rotor is made of separate parts concentric cylindrical or conical shape, decreasing from the periphery towards the center diameter which are arranged between the grinding bodies; wherein for each row of grinding bodies in the body are drilled discharge openings, and all parts of the rotor in the lower part and the washer are restrictive on each row of grinding bodies at an angle from the center to the periphery drilled feed hole; wherein some of the parts of the housing and the rotor into contact with grinding media from both sides.